Existence and uniqueness for $L^1$ data of some elliptic equations with natural growth

Existence and uniqueness for $L^1$ data of some elliptic equations with natural growth
复制标题

DOI:
--
复制
发表时间:
2003
影响因子:
1.4
通讯作者:
S. S. D. León-S.
S. S. D. León-S.
中科院分区:
数学4区
文献类型:
--
作者:
S. S. D. León-S.

文献摘要

被引文献

相似文献

本文研究了如下非线性椭圆问题:{ −div a(x,u,<$u)+ B(x,u,<$u)= f in Ω u = 0 on <$Ω,其中Ω是IR中的有界开算子,f ∈ L(Ω),−div a(x,u,<$u)定义了一个满足Leray-Lions型条件的算子,其低阶项满足自然增长条件及其它一些性质;我们指出,这些属性不包括符号假设(参见下面的模型示例中的(2))。我们证明了这个问题的熵解的存在性(见下面的定义2.2),我们表明,在自然单调性假设下,存在一个最小的熵解。
We deal with the following nonlinear elliptic problem: { −div a(x, u,∇u) + b(x, u,∇u) = f in Ω u = 0 on ∂Ω; where Ω is a bounded open in IR , f ∈ L(Ω), −div a(x, u,∇u) defines an operator satisfying Leray-Lions type conditions, and the lower order term satisfies natural growth conditions and some other properties; we point out that these properties do not include a sign assumption (see in (2) below our model example). We prove existence of an entropy solution for this problem (see definition 2.2 below) and we show that, under a natural monotonicity hypothesis, there exists a smallest entropy solution.